Simatupang, Rumiris. “The Impact of Online Game Addiction on Eye Fatigue in 2020 High School Students in Sibolga City”. Science Midwifery, vol. 9, no. 1, Oktober, Oct. 2020, pp. 197-00, https://midwifery.iocspublisher.org/index.php/midwifery/article/view/75.